Steam

Despite what first users might think, Steam for Android is not the same as the regular Steam application. It’s just a portal for the Steam community, meaning that it allows users to read and participate in the official forums.
Another important function of Steam is called Steam Guard, and it’s the second line of defense that lets users protect their accounts. It’s also possible to stay online and chat with your friend, get notifications from the service, and even browse the store and purchase items.
Steam for Android is also a very important tool that’s needed to provide confirmations for sales, purchases, and trades that are done through the service. Without the app, all of these actions are impossible.